1048. Few sporadic forms

But a few sporadic forms of an iṣ-aorist from causative conjugation-stems are met with: thus, dhvanayīt (RV.; TS. has instead the wholly anomalous dhvanayit), vyathayīsand āilayīt (AV.), pyāyayiaṣṭhās and avādayiṣṭhās (KBU.), in the older language (RV. has also ūnayīs from a denominative stem); in the later, ahlādayiṣata (DKC.), and probably aghātayithās (MBh.; for -iṣṭhās: cf. 904 d). The passive 3d sing, aropi, from the causative ropaya, has a late occurrence (Çatr.).